Friction-gearing.



` To all whom it concern:

I :to

. same direction from any source of power G-USTAF RENNERFELT, OF NEW YORK', N. Y., ASSIGNOR or ONE-HALF To CHARLES J.

KINTNER, 0F NEW YORK, N.

FRICTION- Application led May 11,

GEARIN G.

Specification of Letters Patent. Paijent-d Feb. 20,1912.

1911. Serial No. 626,557.

Be it known that I, GUsTAr RnNNERrEI/r, a subject of the King of Sweden, and resident of New York, borough of Brooklyn, county of Kings, and State of New York, have made a new and useful Invention in F riction-Gearing, of which the following is a specification.

My invention is directed particularly to improvements in that type of gearing known in the artl as planet friction gearing, and .it has for it-s objects, first, to increase the etliciency and reliability of gearing of this t 7pe and to so arrange the parts thereof that therollers utilized in connection therewith shall not become subjected to abnormally high pressures. Second, to provide a system of planet gearing of this type which may be cheaply constructed and' readily made applicable to various uses' in the transmission of power. l' I My invention a's illustrated in the accompanying drawings is made especially applicable in connection with hoists or elevators the drum of which isarranged to be ro` tated alternately in either direction, so that the shaft which delivers the 'power to the elevator may be rotated constantly in the with which it is (connected.

For a full and clear understanding of my invention'` such as will4 enable others skilled in the art to construct and use the same, reference is hadi to the accompanying drawings. in which,r

Figure 1 is a longitudinal sectional view of the apparatus, one of the friction gearing rollers, however, being left out in this View to better-illustrate the peculiar structural nature/of the parts with which they are associated. Fig. '2 is a 'cross sectional view taken through Fig. l on the broken line X-Xand as seen looking thereat`from left right in the direction of the arrows and upon the supposition that "all the friction gearing rollers are in place, the journal bearing blocks for Ythe rollers of the friction gearing being left out in this view. Fig. 3 is aA detail side elevational view of one of the journal bearing blocksE for the rollers.

Referring-now to the drawings in detail,

the drum 2.

. the elevator drum which serves-as a casing adapted to inclose'the operative parts of the protect the same from4 gearing and to fully dust, dirt, or grit.

3 illustrates a hollow shaft cast integral with the drum being connected thereto by a' web, as shown, and 4 shows a drum' headsecured directly to the drum 2 by a. plurality of bolts b, b.

- 5 and 6 represent journals seated in bearings 7, 7 in the base plate or frame 1,V as shown, there being rovided 'for-such journals and bearings t eusual oil reservoirs and oil rings,; as shown. The journal 5 is cast integral with the l"head 4 as is also an internally projecting sleeve, the function of which latter will be described later on while the journal 6 is cast integral with the hollow shaft 3. V i y 8 represents a second'shaft preferably hollonY` ut not necessarily so-said shaft-being journaled in bearings 10, 10 a t its o po` site ends on the interior of the hollow sliaft 3 and provided at its interior end with a yoke 11 ,which is connected integrally with the shaft `8 by a web formed in casting. This yoke is hollow, as shown, and isprovided with three pairs of radially disposed slots' l2, 12,12 located 120 apart and adapted to'slidingly support three pairs of bearing-blocks 14, 14, 14 in which are journaled journal bearing studs 15, 15, 1:3 which' support eachl a roller 16 having a spherical or convex rolling face, the journal bearing blocks 14, 14g-being held in place by pins and washers at the opposite ends, as clearly shown. f' y 17 illustxiates a hard steel track formed Vwith an internally disposed spherical face nld secured directly to the drum by a screw The outer journal bearing for the shaft 8 is formed within the inner surface of the hollow shaft 3 and the inner journal bearing 10 therefor is provided with a lateral flange lwhich is bolted directly to the ihner face of the web which connects the shaft 3 with,

18 and 19 illustrate oil rings which are held in place by their own weight in grooves about. the outer face of the shaft 8 and are 1 represents the base plate or frame which is adapted to be'secured in any preferred way to the floor or at the point where the t apparatus is to be utilized, and 2 represents l adapted to convey oil to the bearings of this-shaft from oil reservoirs 20 and 21, the former being cast integral with the shaft 3 and provided with aring'cap secured y tegral with the head el.4 lhefnsinil cage is 'also provided 'foifsei'iaiatii'ig the balls 24, asl

1ers at the saine point.4

shown. The face 'of the pinion 22 is'seated in contact with the rollers 16 and it is con- `caveybeing formed as "a surface of rotation with a genetiix which isalnV are. of a circle iliavinfffa radins' soinewhat rreater than the.

radiiisofoiie' of tlief` rollers "l (3, 16. The face of the ball hearing race eoiistitiites the part. of ar spherefliafriiizgi'- a radius eentered in the center of the pinion 22o shown liv an enlarged dot., andthe hall'beaijiiig fa'ee of thei track 17lias preferably' a radius .which cenv .,f'l`liese1 tavol. rela ti rely 'spheriea l" feat or( arel iiidieated by. dotted cireles in both instanees. 'lhepinion 22 iseonn'eetefl to a 4d riring' sliaftQT through the agency'olt afsplii'ie L'G. 'l`liis s in t-ninprovded with i'iieaiis, as l fori eoiiiieet'iagitv 4to anall soin-ee. of digii iiigpower, adapted'kto drive it 'eontiiiiioiisly in :one direction att-.relativelyhighspeed. i

AA;represents a vlit-alte siiijlae.-upon the drum 2 adapted to' he provided with, abrake ot iis-iial 'lil'peg and ll 'represents a.- Second siiiiilar bra ke siii-tace en the oiiter 'Faeeof a brake wheel o'i pi'f'lley 28 splitiiell to the oiiter end o'lthe slial't'S and4 provided also with a. brake; it liein'g' niiderst'orul that inV the. ease. ot an elevator the soiiiee olt roiiti'olfo'f` the. brakes iS-earried [by "the ear and adapted to operated by the attendant iii the iisiial way. i p

'lhe inode ot'lopeiition is :is follo\ vstl1e shaft .Taii'd tli'e pinion 22- earitied thereby are rotated ronlii'iiioiisly at a high speed and in a eonstaiil direetion 4and the brake shoes are 4bolli relatively loose when the ear iastatieiiai'y and io tlie base of tlie `elevator shaft.

'lt. will lieI understood that. the eiii'viliiiear linee ottlie pinion E22 is pressed eonliiiiioiisly against lthe inner eiirvilinear faces of the' rollers,- lt` t'liroiigli tlie agency of any prei `ferred means, -as a-stroiig` spiral spring 23,

and willi stillieient foiee to eiialile the soiiree ol iliower t"o inipart"tlie'desired amount of' energy to rariv a niaxiniiiiii load willi 'a'e/ertaint-y of preventing any slippiii'f,` eveil it tlie apparatus liefsiil'ijeelrd to-e4iiisiileralle orerload. lly reason ot tlie"siillieieiieyl ol" ilie l'rirlioiial loi-ees at the points ol' Contact ln't.i\feen the, rollers lll and `llie pinion and between said rollers and the traek A.17 the rollers will tend to rotate the yoke l1 with its shaft; 8 in the same direction -as the shaft, '27 is rotated by the source of power. Theywill also tend ldrum 2 and shaft. 3 in areverse. direction'.- i vWhether the shaft 8 or the shaft; 3 will be 'rotated depends upon' which one of the brake shoes B is applied against its braking surface A or B, so that- I( to illustrate) if the brake shoe for the surface' A fbe looseand thebrake shoe for the surfacQB tightened the druin will berotate'd by 'the piverl`applied to the shaft 27 and, 'consequently a. 'oar n attached to 'a eable wound 2 will ascend: u

l f both the brake shoes are loose the'shafts around the drum 3, Sand- 27 will all rotate in the same'direction, thus permitting the car to 'descend-.by gravity with a speed which can be regulated by a more or less oroeful application ofthe brake shoe upon lthe surface AY 'If the brake shoe uponthe'surface'be tightenfaftl i .tliefdrniu is'held still a.iid'tjhe1shat8'i sj oe, ,tilted .The ratiobetween the 'speeds ofthe shaft 27 and the shafts 3 QxfSldependsfnfion the relative sizeof the diainet'er of' the track 1.7 andthe diameter of the pnionvpsaid sizes being;` determined-also with'regard-,to4

t=lie amount of powento betransmfittetlby A`spherical on: their bearing snrfaees in order that they shall r'iot-be"subjected to axial t'oi'oe or. to valfo'iee tending to tilty them.

'llietraelc 1T/is made spherical in ordeethat' the rollers 16 shall lie siire to travel on Said splieriealinvoi'der to provide a selflaljiistf.

nient ot. suoli race iii-:relation to thefpinion .22. 'lliefdepth' of -the slots 12' shoiildbe great eiioiigli to allow soine eleai'anee,under the beariirer blocks "14, but..'iiotrsi-itlieiently`.. great to allow any considerable'variationlin the position of the rollers 1G from the posit tion shown inl tlie drawings. 'Forthe sev# eral liea ring 'blocks and such other parts lof' the device as reqiiire'oil, holes such as 30 areproviided therewith for eliminating friclion and wear. Obviously other means-off.

pressure might take the plaee of the-'spring 23 and sa id means of pressure might be made.,

heen irevioiisl elaiiiietl bv nie in tlie abovel nanied applieatioii-Seigiai No. 511,099.4

ldo'iiot liiii'it my i'nventiori to tzl'iefHpee'ifie Ileta'ils `if oonstriietion diselosed' the alfconipaiiyiiig: drawings as la niiii'ilierv oF the l'eatiii'es llieieo't' iniglit. lie departed from and still eoine witliiii the scope of my invention.

Nor' do I'limit my invention in its application to use in connection with lifts or elevators, as the essential novelty thereof consists in the provision of planet gearing so interconnected and arranged as'to adapt it for use in the transmission of power generally in the arts where Lit' is important that such power shalhbe transmitted in reverse ,direc- I tions from' a rotary; shaft driven continuously in one direction from .a source of energy and ,at different speeds, and my claims hereinafter are designed to be of such sc'ope as to cover broadly the application of :these generic principles. Nor do I limit myself'to the-useof a reversible drum, as obviously s. stationary casing may be utilized instead of the drum 2, in which event I could use the apparatus as a means for reducing the speed of an electric motor or a'ny motive device capable of running at top speeds. Or, such a device might be used for increasing the speed of a driven mechanism by 'applying the power to the vshaft 8 instead of the shaft 27 as before described, as will be obvious on inspection of the drawin s.

lavingthus described my invention what I claim and desire to secure by Letters Paten t of the United States is-- vl. Friction gearing embracing a driving shaft, a pinion thereon, a spherical track, a plurality of rollers having convex rolling surfacesand located between 'the pinion and the track, means for forcing the pinion against the rollers; together with a second shaft operatively connected with the rollers, substantially as described.

2. Friction gearing embracing a driving shaft, a pinion thereon, a spherical track, a plurality of rollers having convex rolling faces and located between the pinion and the track, means for forcing the pinion against the rollers, a second shaft opera- 4t-ively connected with t-he rollers together with a drum operatively connected to the track and all operating substantially as described.

3. Friction gearing embracing a driving shaft, a pinion thereon, a'spherical track, a plurality of rollers having convex rolling faces and located between the pinion and Athe track, means for forcing the pinion against the rollers, a second shaft operatively connectedwith the rollers.; together with a drum' operatively connected to the track and a brake for the drum, substantially as described.

4. Friction gearing embracing a driving shaft, a pinion thereon, a spherical track, a plurality of rollers having convex rolling faces and located between the pinion and the track, means for forcing the pinion against the rollers', a second shaft operatively connected with the rollers; together with a drum operatively connected to the track, and two brakes, one for the drum and 4the other for the second shaft, and all operating substantially as described.

5. Planetary friction gearing embracing a' plurality of rollers having spherical faces, a concave friction pinion, carried by a driving shaft, and a spherical track, said rollers" having fi'ictional bearing between the pinionand `the track;together with means for frictio'nally forcing the inion against -the faces -of the rollers, Suiistantially as described.

6. Planetary frictiongearing embracing av A plurality o' f rollers having spherical faces, a

driving shaft., afriction pinion carried thereby and having a concave face in frictional relation with the aforesaid rollers, a

'spherical track, and a second shaft opera,

tively connected with means for supporting the rollers; together with means for yieldingly forcing the pinion in firm frictional. relation with the rollers, substantially as described.

7. Friction gearingembracing a driving shaft, a friction pinion carried thereby, a

track, a plurality of spherical rollers having frictional contact between the track and'the pinion; together with means for forcing the frictional pinion constantly against the faces of the rollers, substantially as described.

9. Friction gearing embracing a driving shaft, a friction pinion carried thereby and having a concave driving face, a second shaft, and a plurality of rollers carried thereby, said rollers having convex faces and frictionally bearing against the face of the pinion; in combination with a track having a spherical driving face against which the rollers bear frictionally; means for supporting the trackand means for yieldinglyforcing the pinion frictionall against the faces of the muera-substantial y as described.

1Q. A power transmitting apparatus embracing two rotatable shafts, a driving drum, and planetary friction gearing consistin of a pinion carried by one of said shafts, an(

a plurality of rollers carried by the other;

together with a traCk'carried within the drum and having frictional bearing against the. outer faces of the rollers, substantially as described.A

l 11. A power `transmitting apparatiis ein bracingitwo rotatable =shafts, a driving drum,-

and planetary friction gearing consisting' A 12. A 'powertransniitting apparatus ein.-4

bracing two'iotatable shafts, a. driving drinn,

and aplar'ietary friction-*gearing 'lia-ving a driving' pinion secured .to one of said; shafts'- and` a plurality, of' rollers -caijricd by =the= .other andlhaving frictional relation with" the pinion; a-tiaelcsecuredv to the drinn-and having; frictioiial relation with the outer .sur-v .goperativelyr-connected 'with the drum and 'eccomi-.brakeoperatively-connected with the seni-intl.shaft,Siibstantially as tiescribed.'

). A power transmitting apparatus `eniliratfiiigiwo Arotatable Shafts; n piillev'carf 4 ,fono of shai'ts and -nieaiia` lca r? thoot-hei' for ,coiiiiecting it to a" rie'tlbyf thev first {Shaft} a concave drivingpiniotr arried'ily' thbjecond Shaft;- a' track 'for the rollers, andzanniiclosing cas-ing which .supports theI tac'k; together with yieldingl means for holdiiigthe pinion in frictional relation witlrithe r0l'lers,?siibstantial ly as 'clcj fof support' therefor, -said pinion :1nd track haying concave running' surfaces and the rollers convex ruiming gan-faces: together with''inean's :forfyieldlnglyholdingvthe siii'- v :ice of the pinion ti'ic'tionally agrainSt the y inner adjacentSurfin-es otl the rollers, siibstantiall-y as described.

l15. Ihecoinbination of a frame, a drum mounted witliholloiv journals in the traine,-

an oil reservoir' 'fastened to the drum, a shaft extending through ione ot the JonrnalS,aii oil rino upon the shaft within the oil reservoir; a ilga'nctary friction gearing within the (li-nin operatively connected. to the Shaft. .and toI .the (li-um,- and a lfaces ot' the,

through theother journal and connected to: the gearing.

operatively 16. 'Planetary frictionigearingembracing` a friet-ionipinion having a concave driving siirface,-a track a'lsohavinga 'concave dr1ving-'surface,a plurality of rollersladapted tov .travel between said s'rfaces, means for A rigidly supporting the track; together with Ayieldinglysup-ported 'balls'v--for-4 holding the f concave surfacef the `pinion -`in definite1 frictional relation with the adjacent convex siir- '17.Ina lpovver .transmittingapparatus a driving shaft, 'a seconder' driven shaft andplanetary -friction' ggearing 'operatively vcon-- nectin'gi the twoI shafts'together; `in combination 'with 'a' third shaft#I andy a`driving drimrcarried thereby, said drum beingaopr'` v face of the` rollers; together @with-a brake" atively connected with' tliefri'etion gearing; together withE two oiling4 reservoirs, one be adriving eiirfaces and located between the'pi'nion :and the trackj -means fo forcing kthe pinionl against .the-rollers; togetherwitl'i a second shaft operativelyconnected with therollers,

19.11' Friction *gearing 'enibraing a 'drivingf shaft, a pinion-having a@ concave rolling face-thereon, a track, `a plurality of 'rollers 'havingconvex-rolling -surfaces and located between the pinion andthe track, ine`ans for forcingr the pinionagaiiit th'rollers, a' yoke having a plurality of radially disposed'slots,

I ingrotatable 'vvithi the'.driimiand--tlieother Y' constitutingapa-rto 'the' 'frame 'of the m'aso y ingsbetween'the'concentrically drivenfshatt- Avshaft, a"concav e' pinion thereon,a tracln'a pliirality `of rollers having-convex rolling' hearing"hlecksloosely mounted' in said-slots',

Witnesses C. Kiit'rn'nn, i 

